package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.entity.vo.AttrGroupWithAttrVO;
import com.atguigu.gulimall.product.entity.vo.SpuItemBaseAttrVo;
import com.atguigu.gulimall.product.service.AttrService;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.w3c.dom.Attr;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
        // select * from pms_attr_group where catelog_id = catelogId and ( attr_group_id = key OR attr_group_name like %key% )
        String key = (String) params.get("key");

        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
        if (!StringUtils.isEmpty(key)){
            wrapper.and((obj)->{
                        obj.eq("attr_group_id",key)
                                .or()
                                .like("attr_group_name",key);
            });
        }
        if (catelogId == 0){
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper
            );

            return new PageUtils(page);
        }else {
            wrapper.eq("catelog_id",catelogId);
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper
            );

            return new PageUtils(page);
        }
    }

    @Override
    public List<AttrGroupWithAttrVO> attrgroupWithAttrByCatelogId(Long catelogId) {

        //查询分类下的所有分组
        List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        //查询各个分组下的所有属性
        List<AttrGroupWithAttrVO> collect = attrGroupEntities.stream().map((attrGroup) -> {
            AttrGroupWithAttrVO attrGroupWithAttrVO = new AttrGroupWithAttrVO();
            BeanUtils.copyProperties(attrGroup, attrGroupWithAttrVO);

            Long attrGroupId = attrGroupWithAttrVO.getAttrGroupId();
            List<AttrEntity> attrs = attrService.getRelationAttr(attrGroupId);
            attrGroupWithAttrVO.setAttrs(attrs);

            return attrGroupWithAttrVO;
        }).collect(Collectors.toList());

        return collect;
    }

    @Override
    public List<SpuItemBaseAttrVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {

        return this.baseMapper.getAttrGroupWithAttrsBySpuId(spuId,catalogId);
    }


}